Maybe sometime down the road we'll find another site to put sectors on that you can see. A city with hills and trees is not a promising place to try and find HamWAN shots unfortunately.
When I heard of the 'data ring' concept used by HamWAN I thought it was so cool I started building my own. That's an option for any one any where. Start with a client node and a single backbone node.
From there add a couple more radios you'll have a real backbone of two units and a client link and a client radio.
Just getting that going will be an education unbelievable. Done right - it'll let you take the client node portable and then hook up to one of the mainline nodes when you have a good location. A 'real' parking lot data ring will take six backbone radios for 3 nodes with dedicated point-to-point links and a client access radio for each node. 9 radios total plus how ever many clients you need.. A little over the top perhaps. Why not - folks in all other hobbies are getting equally involved and spending way more... Bill, WA7NWP